It's a bit out of topic, but this is the thing how it's possible to make workaround in TopSolid. For me this is another option what is possible to show in part definition window. I am using there lot of parameters, some samples:
1) extruded part length - Pipe L=[L]mm and in BOM - Pipe L=1829mm
2) component, which is made in driver block - Door [db.z]*[db.x]*[db.y] - BOM = Door 2090x890x92
etc.

Some customers needs some data only in this way. It's possible to mix it in Excel too, but TopSolid can do that too.